* Jason Merrill: > Since r10-6069[1] we control the call to __cxa_finalize with > DEFAULT_USE_CXA_ATEXIT, so there's no need to also declare it as a weak > reference; if the target has __cxa_atexit, it must also have __cxa_finalize.
I expect that most targets do not need __cxa_finalize. They can run the registered destructors directly, without waiting for a call to __cxa_finalize. > Alternatively, we could replace -lc with > --push-state --no-as-needed -lc --pop-state > which is less likely to break obscure uses, but could result in libc > dependencies that are actually unneeded. And some of the obscure uses have > been broken since GCC 10. I think with your patch, libc will is always linked in as well, assuming that it's the source of the __cxa_finalize definition. The difference between the --push-state solution and the patch is that on glibc-like targets, a conditional branch during startup is avoided. And it will be necessary to link with --nostartfiles in more cases (or provide a dummy definition of __cxa_finalize). Thanks, Florian
